Syringe.



M. ABRAMOVITZ.

, SYRINGE.

APPLICATION FILED DEC. 1. 1916 Patented May 28,1918.

z 0 r l 1 e v n 3 affozncq Monms ernezuovrrz, or ner'rmoian, MARYLAND, ASSIGNOB r DAVID mew YORK, n.1, A eonromrrouor New roux.

srnmen.

Specification. of Letters Patent.

Patented May as,

To all 'uihom it may concern:

Be it known that I, MORRIS ABRriM0v1'rz-, a

' citizen of the United States, residing at Bal- 'timore, State of Maryland, have invented certain new and useful Improvements in Syringes, of which the following is a specification.

The present invention relates to improve-' ments in syringesand has for its ObjBGt to provide a syringe which is particularly adapted for injectingdrugs into and treating the posterior urethra. The urethral canal being normally curved at its posterior part and having between the anterior and posterior parts a muscle, the com ressor urethra muscle, which surrounds. an keeps it compressed, makes it practically impossible to inject drugs into the posterior urethra by means heretofore provided except by introducing a catheter or a curved-metal instrument through which drugs may be injected. The condition requiring injection of drugs into the posterior urethra is always inflammatory and therefore the introduction of a catheter or steel instrument is irritating and tends to create new areas of inflammation. By the present inventionthe-neoessity for employing such devices as catheters or similar instruments in thetreatment of such diseases is avoided.

In the accompanying drawing,

. Figure 1 is an elevation of a syringe constructed in accordance with the present in vention, showing the barrel empty and the air bulbs in the position occupied just prior to'la liquid charge being drawn into the bar-' re F15. '2 is a sectional view showing the liqui in the barrel;

Fig. 3 is a similar view showing the position of the parts immediately ,after the liquid has been e elled from the barrel, and Fig. 4 is a similarview 'showing the air pressure means fully com ressed.

Referring to the drawing'it will be seen that the syringe comprises a barrel 1 which may be of any suitable form and material. As shown, such barrel is made of lass having a tapered section 2 at one en through which is formed the inlet and discharge open' 3. Toward its other end the barrel 1 is en arged in diameter and the walls of the o ening at the end opposite the outlet 3 are ared outwardly to rovide a seat in. which is fitted the necke portion 5 of a of liqui barrel 1 an urethral opening, will act to force all of the multaneous relaxing 3; Law, or.

compressible air bulb 4. Preferably as tion illustrated being designed to receiw liquid to the maximum amount of 15 c. c.

The bulb '41 is made of rubber or other suitable material and the neck section 5 thereof is preferably made relatively thick and provided with a centrally arranged duct .or passa e 6. By this construction entrance into the bulb 4 is prevented and 'shown the barrel 1 isprovided with "suitable graduations, the embodiment of the invena so the contents of the barrel 1- may be dis-' charged,-regardless of the position in'which the instrument is held.

A second air bulb 7 is superposed on the bulb 4 with which it communicates through an opening 8. The walls of the inner bulb or the one directly seated on the barrel are,

as shown, thicker and'the size or capacity of such bulb greater than the outer bulb 7. For example of 10 -c., 0. while the inner or lower bulb is of twice that size or adapted to receive 20 c. 0. Owing to the difference in thickness of thewalls of the two bulbs, the outer one may, as shown in Figs. 1 and 3, be compressed independently of or without effectthe outer bulb has a capacity ing the normal condition of the-walls of the mner, larger, bulb. Tlie'amountof air dis- .placed by compressing the. outer bulb 7 is suflieient to cause a suitable quantity of liquid to be drawn into the barrel 1 as said outer bulb is allowed to expand .or return to its normal condition, as is shown by comparison of Figs. 1 and'2. Therefore when it is desired to discharge the contents of the barrel 1 it is only necessary to again compal-{ass the outer bulb, as shown in 3.

e parts are so proportioned that compression of the outer bulb, after the desiredjo amount of H uid has been drawn into the the latter inserted in the section ofjthe urethral cana compressed b the compressor urethral muscle, but by a s1-:'

of such muscle and ar er, inner bulb 4 (as compression of the quid willbe readily shown. in 4) the forced into t e posterior partof the urethral bythe outer hulb is 7 not sufiicient to force the liquid'beyond the I s olmc'iem 7 5?; wi l be seen bha-iby the present venfxzmn empisymg me an hm? G smallelg outs? ans 0 ccampressfiaie 1s 2L mbo 0&1182 l exactly he amountdesired, which cannot dame by partmfiy cemprassmg a smgle bubs mm the? the m0 whines of air be rateiy proparfioneai 50 that While "he will 011337 cause the liquid to an teriar canal wmpression 5i -ha inner .f' bulb will insure the, ioming such into the posteiiar i gain, by the pix-5 invention the amoun; 0f liquici in the Tommi-need never comeinto Contact thebu'ibs is impQ-f ani; as the 0f sizelilizing she rubber fmm whim bulbs are fonmd acts to SGQfiIfiiJE-Z small cicles which soiled; in the U bulb and the fiquic'i were its @9319 t 1 @011 tact therewith might be aleieiwrlousiy affectefii,

The imyroved syringe is superb? to those; in which apiston 01* means other "than pressme is employer fer expefiing he from the barre-,1, as it insures 611.211; the em re liquid mutants will be ezpellecl WE be no wasting thsreofa The, spam of the device is very simple anc'i he uses; for the PHL 10S$ "Without requiring the ervice 0:? a. physiciam having thus diesefibed *luhe invsn'biw, at is claimed and desirecz-izo be semlrez'i by Let tars Pateni;

1, A syringa for treating the urethra with a liquici medicament anmpLs Eng abarrel, adapted? to reeeive and. 3: a body 0f iiq ai, a campressibie bulb me @111 am wmmmica fing "with the h a sewnfl, infiependeuiziy e:olzipmssi'm molmieii on ani wwnunica'fiing wit first bulb, wmpressian of the, $360116 creating a suifieiems vacuum 130 save sires? amowzi; Ziquic"; 1:0 ems? Wham ifm h 31?} mieasei 0 liquia'i sham 0m hams mior math 2.1151 subsac ueni; a of the bulb p .4. 4 ammg: w

a, a mew-1 he @Zemce sum a wmnsequeni; sampressicn 01 the havizgg "esslme bulbs D A wmpnmfig a beg mi adaptezi w rasswe k a KEOQY of magma him fig fan wmpmsmg a bar-rel having a wmpmssibie airfim h i "he barrel Tising a befiai hamng M is? Share-0;;

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